摘要
模态综合法在大型复杂结构动力分析中有着广泛的应用,它能有效地减少结构的计算自由度.结构动力修改作为结构动态设计,简化设计分析过程,在工程中越来越受到重视.本文针对大型结构动力修改的复杂性,应用模态综合技术来缩减结构的自由度.为简化计算,在模态坐标模型中进行动力修改,提出结构动力修改的子结构方法,结合结构物理参数灵敏度分析,为工程结构动态设计的重分析、再设计提供一有效的实用方法.
The Model Synthesis Method is widoly used in large complex stru-
ctural dynamic analysis to reduce the computed D.O.F.Owing to the fact that
the techniqe of dynamic modification may greatly simplify the process of
structural dynamic design,it has become increasingly important for enginee-
ring.In this paper,the authors introduce the application of model synthesis
to dynamic modification,and thus present a submodal modification method.
In this method,the structural dynamic modal is modified in modal coordinate,
combined with the physical parameter sensitivity analysis.It provides an
effecient method for dynamic reanalysis and redesign of large complex stru-
ctures.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
1990年第5期135-140,共6页
Journal of Shanghai Jiaotong University
基金
国家自然科学资助
关键词
结构
动力分析
模态综合法
modal synthesis
dynamic modification
sensitivity analysis
dynamic reanalysis
